分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cichliformes (Cichlids, convict blennies)
鱸形目 (Cichlids, convict blennies) >
Cichlidae (Cichlids)
麗魚科 (Cichlids) > Geophaginae
Etymology: Gymnogeophagus: Greek, gymnos = naked + Greek, gea = the earth + Greek, phaegein, to eat (Ref. 45335); jaryi: Name derived from the Guaraní word 'jarýi' meaning grandmother, and it is dedicated to the Non-Governmental Organization of 'Abuelas de Plaza de Mayo' whose objective is to locate and restore to their legitimate families all the children who disappeared during the last Argentine dictatorship; noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性.
South America: Argentina and Paraguay.
大小 / 重量 / 年龄
Maturity: Lm ?  range ? - ? cm
Max length : 13.3 cm SL 雄鱼/尚未辨别雌雄; (Ref. 119666)
简单描述
型态特徵 | 形态测量图
背棘 (总数): 13 - 14; 背的软条 (总数): 10-11; 臀棘 3; 臀鳍软条: 8 - 9. This species is distinguished from all its congeners except G. australis and G. caaguazuensis, by the presence of a hyaline to grey anterior portion of the dorsal fin; differs from caaguazuensis by having a longer caudal peduncle, caudal fin not lyrate, central portion of scales on dorsal part of trunk light iridescent blue and white spots in soft portion of dorsal fin in adult males; differs from australis by the light iridescent blue coloration of central area of scales on the dorsal portion of trunk and tail, and by the absence of scales on the soft portion of the dorsal fin. It is further distinguished by the following unique set of characters: D 10-11 branched rays; 27-30 E1 scales; absence of lips thickening; adult males with a hump, with large white spots forming transversal stripes distally and in anterior area of the dorsal fin’s soft portion, absence of a conspicuous and oblique dark band from the eye to the anterior border of the head, anterior part of dorsal fin hyaline to grey, scales of the midlateral spot each bearing a semicircular light blue blotch, the head hump start at the horizontal through the eyes, concave anterior profile in lateral view, base of unpaired fins yellow, and whitish hyaline spots on caudal fin (Ref. 119666).
Inhabits streams with sandy and rocky bottom and abundant marginal vegetation. The climate where it is found, on the mountain ridge in Aristóbulo del Valle, is classified as warm and temperate. In this area there is a significant rainfall throughout the year (average per year is 1,678 mm), and even in August with the lowest precipitation, it still has a considerable amount of rain (111 mm). The lowest precipitation occur from July to September, the driest period and lowest water levels from December to February due to the marked seasonal change in temperature, and peaks in precipitation occur from May and October. The annual average temperature is 19.1°C, with 23.9ºC monthly average temperature in January and 14.3ºC in June. Water level in the stream can have important changes: water turbidity is variable among the year with peaks of turbidity after rains and increases in water visibility the rest of the year. Specimens are frequently collected in the rocky areas or associated with marsh and marginal vegetation. The holotype was collected together with the female paratype under the marginal vegetation and with fry on November 2016 (Ref. 119666).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Alonso, F., G.E. Terán, G. Aguilera, O. Rican, J. Casciotta, W.S. Serra, A. Almirón, M.F. Benítez, I. García and J.M. Mirande, 2019. Description of a new species of the Neotropical cichlid genus Gymnogeophagus Miranda Ribeiro, 1918 (Teleostei: Cichliformes) from the Middle Parana´ basin, Misiones, Argentina. PLoS ONE 14(2):e0210166. (Ref. 119666)
世界自然保护联盟红皮书 (Ref. 130435)
濒危 (EN) (B1ab(iii)); Date assessed: 16 December 2020
人类利用
更多信息
俗名同种异名新陈代谢捕食者生态毒物学繁殖成熟度产卵场产卵群集孕卵数卵卵的发育
年龄范围成长体长-体重体长-体长体长-频率形态测量图型态特徵仔鱼稚鱼动力学入添量丰度BRUVS
参考文献养殖养殖信息品种遗传学Electrophoreses遗传率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01862 (0.00849 - 0.04084), b=3.01 (2.83 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).